CN104263077A - Environmentally-friendly fading-controllable ink - Google Patents

Abstract

The invention relates to environmentally-friendly fading-controllable ink. The environmentally-friendly fading-controllable ink comprises a phenolphtalein solution and an alkaline buffer composition. The phenolphtalein solution comprises, by weight, 1-5% of a phenolphtalein complexing agent, 0.5-2% of PVA resin, 2-10% of propylene glycol, 5-10% of ethanol, 1-3% of ethyl acetate, 10-15% of glycerin, 0.5-1% of an antiseptic, 0.5-2% of a surfactant and the balance water. The alkaline buffer composition comprises, by weight, 1-10% of sodium carbonate, 2-5% of sodium acetate, 1-6% of sodium borate, 1-6% of sodium phytate, 0.5-2% of PVA resin, 2-10% of propylene glycol, 5-10% of ethanol, 1-3% of ethyl acetate, 10-15% of glycerin, 0.5-1% of an antiseptic, 0.5% of a surfactant and the balance water. The environmentally-friendly fading-controllable ink can accurately control ink disappearance time by control of a use ratio of the alkaline buffer composition in the phenolphtalein solution.

Description

A kind of environmental protection is faded controlled ink

Technical field

The present invention relates to a kind of ink, particularly relate to a kind of environmental protection and to fade controlled ink.

Background technology

As everyone knows, immature child likes coating and drawing at random, often can be coated onto on wall, on clothes or on books, not easily cleaning and wiping is removed, both wall damage clothes had been destroyed, waste paper again, the ink that much can fade has been there is on this phenomenon market, this ink can fade after a certain time completely, do not leave a trace, the cardinal principle of fading ink is that the phenol phthalein indicator contained in ink develops the color under the effect of alkaline matter, after ink is write, there is neutralization reaction gradually in the carbonic acid gas in alkaline matter and air, fade gradually along with alkali concentration reduces, fade completely after neutralization, existing fading ink on market, accurate control can not be accomplished for fading time, fading time error is very large, if application number is 200810136305.X, the applying date is 2008.11.28 " a kind of neutral fading ink substituted core ", this ink refill comprises following some or all of component: water solvent, sodium hydroxide, ethanol, glycerine, colorant, above composition ratio is by weight as follows, by weight: sodium hydroxide: 0.5-6, ethanol: 0-60, glycerine: 80-120, water solvent: 50-100, colorant: 0.5-12, the a large amount of paper of gel ink pen refill saving that ink refill of the present invention is made, but the time that this fading ink mainly relies on the concentration of highly basic sodium hydroxide to fade to control ink, accurately can not control extinction time, the control of extinction time is fallen flat, and in order to postpone fading time, often need the concentration increasing sodium hydroxide, and the quinoid of phenol phthalein indicator or quinoid hydrochlorate, very unstable in alkaline medium, it can change into colourless carboxylate salt formula at leisure, shelf time falls short of, concentration of sodium hydroxide solution is high, corrodibility is large, the health of harm child.

Summary of the invention

For the present situation of above-mentioned prior art, technical problem to be solved by this invention is to provide a kind of safety and environmental protection, the shelf time long and the environmental protection that accurately can control extinction time is faded controlled ink.

The present invention solves the problems of the technologies described above adopted technical scheme: a kind of environmental protection is faded controlled ink, and comprise phenolphthalein solution and alkaline buffer composition, its components based on weight percentage of described phenolphthalein solution comprises:

Phenolphthalexone 1-5%

PVA resin 0.5-2%

Propylene glycol 2-10%

Ethanol 5-10%

Ethyl acetate 1-3%

Glycerine 10-15%

Antiseptic-germicide 0.5-1%

Tensio-active agent 0.5-2%

Water surplus,

Described its components based on weight percentage of alkaline buffer composition comprises:

Sodium carbonate 1-10%

Sodium-acetate 2-5%

Sodium Tetraborate 1-6%

Sodium phytate 1-6%

PVA resin 0.5-2%

Propylene glycol 2-10%

Ethanol 5-10%

Ethyl acetate 1-3%

Glycerine 10-15%

Antiseptic-germicide 0.5-1%

Tensio-active agent 0.5%

Water surplus.

Compared with prior art, the invention has the advantages that: ink is divided into phenolphthalein solution and alkaline buffer composition by the present invention, separately preservation can avoid ink to fade inefficacys, the prolongation shelf time, improve result of use, and alkaline buffer composition is weak lye, can not corrode human body skin, safety and environmental protection, in addition, accurately can control the extinction time of ink by controlling the alkaline buffer composition amount of adding in phenolphthalein solution, the present invention accords with the demands of the market, and is applicable to large-scale promotion.

Embodiment

Below in conjunction with specific embodiment, the present invention is described in further detail.

A kind of environmental protection is faded controlled ink, and comprise phenolphthalein solution and alkaline buffer composition, its components based on weight percentage of described phenolphthalein solution comprises:

Phenolphthalexone (coupler) 1-5%

PVA resin (thickening material) 0.5-2%

Propylene glycol (permeate agent) 2-10%

Ethanol (solvent) 5-10%

Ethyl acetate 1-3%

Glycerine (wetting Agent for Printing Inks) 10-15%

Antiseptic-germicide 0.5-1%

Tensio-active agent 0.5-2%

Water surplus,

Described its components based on weight percentage of alkaline buffer composition comprises:

Sodium carbonate 1-10%

Sodium-acetate 2-5%

Sodium Tetraborate 1-6%

Sodium phytate 1-6%

PVA resin (thickening material) 0.5-2%

Propylene glycol (permeate agent) 2-10%

Ethanol (solvent) 5-10%

Ethyl acetate 1-3%

Glycerine (wetting Agent for Printing Inks) 10-15%

Antiseptic-germicide 0.5-1%

Tensio-active agent 0.5%

Water surplus.

According to above proportions phenolphthalein solution and alkaline buffer composition, after preparation, containing in graduated transparent plastics A bottle by filling for phenolphthalein solution, containing in graduated transparent plastics B bottle by filling for alkaline buffer composition, both separately preserve, ink can be avoided to fade inefficacy, extend the shelf time, during use, according to different fading times, in B bottle solution, extract different amounts with syringe is mixed in A bottle solution, stir and just can use, the amount that its fading time can add in phenolphthalein solution according to alkaline buffer composition is determined, specific as follows:

1, fade requirement 5-8 hour, gets 1/10B bottle solution and be mixed in A bottle solution;

2, fade requirement 8-12 hour, gets 2/10B bottle solution and be mixed in A bottle solution;

3, fade requirement 12-18 hour, gets 3/10B bottle solution and be mixed in A bottle solution;

4, fade requirement 18-24 hour, gets 4/10B bottle solution and be mixed in A bottle solution;

5, fade requirement 24-30 hour, gets 5/10B bottle solution and be mixed in A bottle solution;

6, fade requirement 30-36 hour, gets 6/10B bottle solution and be mixed in A bottle solution;

7, fade requirement 36-42 hour, gets 7/10B bottle solution and be mixed in A bottle solution;

8, fade requirement 42-48 hour, gets 8/10B bottle solution and be mixed in A bottle solution;

9, fade requirement 48-54 hour, gets 9/10B bottle solution and be mixed in A bottle solution;

10, fade requirement 54-60 hour, gets 10/10B bottle solution and be mixed in A bottle solution.

The present invention adopts weak base to make developer, human body skin can not be corroded, safety and environmental protection, and component is divided into A bottle and B bottle by the present invention, A bottle is phenolphthalein solution, B bottle is alkaline buffer composition, separately preserve, the quinoid in phenol phthalein indicator or quinoid hydrochlorate changing into colourless carboxylate salt formula and losing efficacy slowly can be prevented, thus extend the shelf time, and when using, accurately can control the extinction time of ink by controlling the alkaline buffer composition amount of adding in phenolphthalein solution, can get a desired effect to the control of ink extinction time.

Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, it will be understood by those of skill in the art that it still can be modified to the technical scheme described in foregoing embodiments, or wherein portion of techniques feature is replaced on an equal basis; And these amendments or replacement, do not make the essence of appropriate technical solution depart from spirit and the scope of various embodiments of the present invention technical scheme.

Claims (1)

1. environmental protection is faded a controlled ink, and it is characterized in that, comprise phenolphthalein solution and alkaline buffer composition, its components based on weight percentage of described phenolphthalein solution comprises:

Phenolphthalexone 1-5%

PVA resin 0.5-2%

Propylene glycol 2-10%

Ethanol 5-10%

Ethyl acetate 1-3%

Glycerine 10-15%

Antiseptic-germicide 0.5-1%

Tensio-active agent 0.5-2%

Water surplus,

Described its components based on weight percentage of alkaline buffer composition comprises:

Sodium carbonate 1-10%

Sodium-acetate 2-5%

Sodium Tetraborate 1-6%

Sodium phytate 1-6%

PVA resin 0.5-2%

Propylene glycol 2-10%

Ethanol 5-10%

Ethyl acetate 1-3%

Glycerine 10-15%

Antiseptic-germicide 0.5-1%

Tensio-active agent 0.5%

Water surplus.